CN103290271A - Aluminum-titanium-phosphorus-carbon-boron intermediate alloy and preparation method thereof - Google Patents
Aluminum-titanium-phosphorus-carbon-boron intermediate alloy and preparation method thereof Download PDFInfo
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- CN103290271A CN103290271A CN2013102730358A CN201310273035A CN103290271A CN 103290271 A CN103290271 A CN 103290271A CN 2013102730358 A CN2013102730358 A CN 2013102730358A CN 201310273035 A CN201310273035 A CN 201310273035A CN 103290271 A CN103290271 A CN 103290271A
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Abstract
The invention belongs to the field of metal materials and relates to an aluminum-titanium-phosphorus-carbon-boron intermediate alloy of primary silicon and eutectic silicon, which is used in a refinement and modification eutectic and hyper-eutectic aluminum-silicon alloy and a preparation method thereof. As for an intermediate alloy system, a phosphorus element exists in the form of Ti5P3 and TiP0.63 compounds, and the intermediate alloy system further contains micron-scale and submicron-scale TiC and TiB2 particles. The alloy comprises the following chemical components in percentage by weight: 82.00%-96.30% of aluminum, 2.50%-10.00% of titanium, 1.00%-5.00% of phosphorus, 0.10%-2.00% of carbon and 0.10%-1.00% of boron. The preparation steps are as follows: well preparing industrial pure aluminum, an aluminum-phosphorus binary intermediate alloy, an aluminum-boron binary intermediate alloy, pure titanium and graphite powder according to the proportion; and placing the well prepared pure aluminum and the aluminum-boron binary intermediate alloy in a medium-frequency furnace together for melting to 900 DEG C-1100 DEG C, adding the aluminum-phosphorus binary intermediate alloy, stirring for 2-5min, heating to 1100 DEG C-1400 DEG C, simultaneously adding the pure titanium and the graphite powder, performing heat preservation, stirring for 5-30min, and then directly casting to form an ingot or preparing a wire. The prepared aluminum-titanium-phosphorus-carbon-boron intermediate alloy has good refinement and modification effects.
Description
Technical field
The invention belongs to metal material field, particularly aluminium-titanium-phosphorus-carbon-boron master alloy of primary silicon and Eutectic Silicon in Al-Si Cast Alloys and preparation method thereof in a kind of can refinement rotten aluminium-Si system alloy.
Background technology
At present, the method for adding phosphorus is mainly adopted in the refinement of primary silicon in eutectic and the hypereutectic aluminium-Si system alloy.Since the patent of the '30s invention in last century phosphorus refinement primary silicon, the research of phosphorous master alloy has obtained bigger progress, as copper-phosphorus, Solder for Al-Cu Joint Welding-phosphorus, aluminium-iron-phosphorus and aluminium-silicon-master alloys such as phosphorus.Application number is that 200510044827 Chinese patent has been reported a kind of novel master alloy that contains aluminium, silicon, phosphorus, contain a large amount of preformed AlP particles in this master alloy, it has favorable refining effect to primary silicon, and has obtained aborning to apply on a large scale.But the AlP compound in this master alloy is easy to oxidation in air, hydrolysis, thereby causes the loss of phosphorus in the preservation process of master alloy.The patent No. is that the Chinese patent of CN101613820B has been reported a kind of aluminum-zirconium-phosphorus master alloy, wherein form the standing loss problem that a large amount of ZrP compounds has solved AlP, but the interpolation of zr element has improved the production cost of master alloy greatly, therefore press for a kind of new phosphorous aluminium base master alloy of invention aborning, when reaching favorable refining effect, be convenient to prolonged preservation and use, and production cost is lower.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of aluminium-titanium-phosphorus-carbon-boron master alloy that can play efficient refinement to the primary silicon in eutectic and the hypereutectic aluminum-silicon alloy and significantly improve the mechanical property of alloy is provided, provides simultaneously that a kind of production cost is low, technology is easy, be fit to the preparation method of suitability for industrialized production.
The present invention realizes in the following manner:
A kind of aluminium-titanium-phosphorus-carbon-boron master alloy comprises aluminium, titanium, phosphoric, it is characterized in that it also contains carbon and boron, the mass percent of each component is: aluminium 82.00%-96.30%, titanium 2.50%-10.00%, phosphorus 1.00%-5.00%, carbon 0.10%-2.00%, boron 0.10%-1.00%; Phosphoric is mainly with Ti
5P
3And TiP
0.63Form is present in the master alloy; The TiC, the TiB that contain micron order and submicron order
2Particle.Ti
5P
3And TiP
0.63After particle joins in eutectic and the hypereutectic aluminum-silicon alloy melt, Ti
5P
3And TiP
0.63Generate AlP with the molten aluminium reaction, for primary silicon provides heterogeneous core.Simultaneously, the TiC of introducing, TiB
2Particle not only can promote the thinning effect of AlP, and energy refinement α-Al crystal grain, further refining eutectic group, the comprehensive mechanical property of raising alloy.
The principle of reaction is to utilize the unstable of TiC structure, and the P element can be doped in its lattice, and then causes recurring structure to change, and forms Ti
5P
3And TiP
0.63Compound, the B element has reacted katalysis to this.
The preparation method of above-mentioned a kind of aluminium-titanium-phosphorus-carbon-boron master alloy is characterized in that may further comprise the steps:
(1) at first be ready to aluminium-phosphorus binary master alloy, aluminium-boron binary master alloy of 3.00%-17.00%, the pure titanium of 2.50%-10.00% of required raw material: 14.30%-72.00% by following mass percent, the 0.10%-2.00% Graphite Powder 99, surplus is fine aluminium; Wherein the percentage composition of phosphorus is 5.00%-7.00% in used aluminium-phosphorus binary master alloy, and the percentage composition of boron is 3.00%-6.00% in aluminium-boron binary master alloy;
(2) place intermediate frequency furnace to be melted to 900 ℃-1100 ℃ with aluminium-boron binary master alloy the fine aluminium for preparing, add aluminium-phosphorus binary master alloy, stirred 2-5 minute;
(3) be warming up to 1100-1400 ℃, add pure titanium and Graphite Powder 99 simultaneously, insulation is also stirred after 5-30 minute casting ingot-forming or is made wire rod.
Consisting of of prepared aluminium-titanium-phosphorus-carbon-boron master alloy:
Directly preparation contains Ti
5P
3And TiP
0.63Aluminium-titanium-phosphorus-carbon-boron master alloy difficulty relatively, and the carbon by adding trace and boron can synthesize and contain a large amount of Ti as catalyst for reaction
5P
3And TiP
0.63Aluminium-the titanium of particle-phosphorus-carbon-boron master alloy, contained compound is facile hydrolysis, oxidation not, be conducive to the storage of phosphorus, and titanium elements wherein can also play the effect of refinement matrix α-Al crystal grain, is conducive to improve the over-all properties of alloy.Adopt this master alloy that eutectic and hypereutectic aluminium-Si system alloy are carried out thinning processing, primary silicon wherein can be by refinement well, and also can play good metamorphism to Eutectic Silicon in Al-Si Cast Alloys.The preparation technology of this alloy is simple, and the production efficiency height is fit to scale operation and application.
Embodiment
Provide three most preferred embodiments of the present invention below:
Embodiment 1
(1) mass percent by commercial-purity aluminium 9.70%, aluminium-phosphorus binary master alloy 65.00%, aluminium-boron binary master alloy 13.30%, pure titanium 10.00%, Graphite Powder 99 2.00% takes by weighing raw material, wherein the phosphorus content of aluminium-phosphorus binary master alloy is 7.00%, and boron content is 6.00% in aluminium-boron binary master alloy.
(2) place intermediate frequency furnace to be melted to 900 ℃-1100 ℃ with aluminium-boron binary master alloy the fine aluminium for preparing, add aluminium-phosphorus binary master alloy, stirred 2-5 minute;
(3) be warming up to 1100 ℃-1400 ℃, add pure titanium and Graphite Powder 99 simultaneously, insulation is also stirred after 15-25 minute directly casting ingot-forming or is prepared into wire rod.
Consisting of of prepared aluminium-titanium-phosphorus-carbon-boron master alloy:
Wherein, phosphoric is with Ti
5P
3And TiP
0.63Form is present in the master alloy; And the TiC, the TiB that contain micron order and submicron order
2Particle.
Embodiment 2
(1) mass percent by commercial-purity aluminium 26.00%, aluminium-phosphorus binary master alloy 58.00%, aluminium-boron binary master alloy 10.00%, pure titanium 5.00%, Graphite Powder 99 1.00% takes by weighing raw material, wherein the phosphorus content of aluminium-phosphorus master alloy is 6.00%, and boron content is 4.00% in aluminium-boron master alloy.
(2) place intermediate frequency furnace to be melted to 900 ℃-1100 ℃ with aluminium-boron binary master alloy the fine aluminium for preparing, add aluminium-phosphorus binary master alloy, stirred 2-5 minute;
(3) be warming up to 1100 ℃-1400 ℃, add pure titanium and Graphite Powder 99 simultaneously, insulation is also stirred after 10-15 minute directly casting ingot-forming or is prepared into wire rod.
Consisting of of prepared aluminium-titanium-phosphorus-carbon-boron master alloy:
Wherein, phosphoric is with Ti
5P
3And TiP
0.63Form is present in the master alloy; And the TiC, the TiB that contain micron order and submicron order
2Particle.
Embodiment 3
(1) mass percent by commercial-purity aluminium 39.80%, aluminium-phosphorus binary master alloy 50.00%, aluminium-boron binary master alloy 6.70%, pure titanium 3.00%, Graphite Powder 99 0.50% takes by weighing raw material, wherein the phosphorus content of aluminium-phosphorus binary master alloy is 5.00%, and boron content is 3.00% in aluminium-boron binary master alloy.
(2) place intermediate frequency furnace to be melted to 900 ℃-1100 ℃ with aluminium-boron binary master alloy the fine aluminium for preparing, add aluminium-phosphorus binary master alloy, stirred 2-5 minute;
(3) be warming up to 1100 ℃-1400 ℃, add pure titanium and Graphite Powder 99 simultaneously, insulation is also stirred after 5-10 minute directly casting ingot-forming or is prepared into wire rod.
Consisting of of prepared aluminium-titanium-phosphorus-carbon-boron master alloy:
Wherein, phosphoric is with Ti
5P
3And TiP
0.63Form is present in the master alloy; And the TiC, the TiB that contain micron order and submicron order
2Particle.
Claims (2)
1. aluminium-titanium-phosphorus-carbon-boron master alloy comprises aluminium, titanium, phosphoric, it is characterized in that it also contains carbon and boron, the mass percent of each component is: aluminium 82.00%-96.30%, titanium 2.50%-10.00%, phosphorus 1.00%-5.00%, carbon 0.10%-2.00%, boron 0.10%-1.00%; Phosphoric is with Ti
5P
3And TiP
0.63Form is present in the master alloy; And the TiC, the TiB that contain micron order and submicron order
2Particle.
2. the preparation method of a kind of aluminium-titanium according to claim 1-phosphorus-carbon-boron master alloy is characterized in that may further comprise the steps:
(1) at first be ready to aluminium-phosphorus binary master alloy, aluminium-boron binary master alloy of 3.00%-17.00%, the pure titanium of 2.50%-10.00%, the 0.10%-2.00% Graphite Powder 99 of required raw material: 14.30%-72.00% by following mass percent, surplus is fine aluminium; Wherein the percentage composition of phosphorus is 5.00%-7.00% in used aluminium-phosphorus binary master alloy, and the percentage composition of boron is 3.00%-6.00% in aluminium-boron binary master alloy;
(2) place intermediate frequency furnace to be melted to 900 ℃-1100 ℃ with aluminium-boron binary master alloy fine aluminium, add aluminium-phosphorus binary master alloy, stirred 2-5 minute;
(3) be warming up to 1100-1400 ℃, add pure titanium and Graphite Powder 99 simultaneously, insulation is also stirred after 5-30 minute casting ingot-forming or is made wire rod.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881055A (en) * | 2019-03-25 | 2019-06-14 | 常州大学 | A kind of cocrystallized Al-Si alloy one-step method phosphorus boron dual metamorphism method |
| CN110358948A (en) * | 2019-06-11 | 2019-10-22 | 上海交通大学 | A kind of aluminium-titanium diboride-phosphorus intermediate alloy and preparation method thereof |
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2013
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|---|---|---|---|---|
| CN109881055A (en) * | 2019-03-25 | 2019-06-14 | 常州大学 | A kind of cocrystallized Al-Si alloy one-step method phosphorus boron dual metamorphism method |
| CN109881055B (en) * | 2019-03-25 | 2021-06-22 | 常州大学 | One-step method for dual modification of phosphorus and boron of eutectic aluminum-silicon alloy |
| CN110358948A (en) * | 2019-06-11 | 2019-10-22 | 上海交通大学 | A kind of aluminium-titanium diboride-phosphorus intermediate alloy and preparation method thereof |
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